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This study maps the general lines of semi-presidential research with regard to theory, topics and methods. It identifies research gaps and provides recommendations for future studies. The review includes a general screening of 327 publications covering the period 1970–2015, and a close reading of sixty-five selected publications. The findings suggest that the inconsistent use of regime type definitions has limited the possibilities for generalizations. The study tracks the influence of some seminal articles, as well as the recent trend of focusing on the role and powers of the president. The article calls for more studies beyond Europe, and suggests that the field would benefit from including Historical and Normative Institutionalism. Finally, it suggests the need for studies on public administration that are relevant to the functioning of semi-presidential government.

What are the lessons of the 2016 referendum on UK membership of the European Union (EU) regarding the effects of message framing? This article reports findings from an innovative online survey experiment based on a two-wave panel design. The findings show that, despite the expectation that campaign effects are generally small for high-salience issues – such as Brexit – the potential for campaign effects was high for the pro-EU frames. This suggests that within an asymmetrical information environment – in which the arguments for one side of an issue (anti-EU) are ‘priced in’, while arguments for the other side (pro-EU) have been understated – the potential for campaign effects in a single direction are substantial. To the extent that this environment is reflected in other referendum campaigns, the potential effect of pro-EU frames may be substantial.

The recent spate of mass public shootings in the United States raises important questions about how these tragic events might impact mass opinion and public policy. Integrating research on focusing events, contextual effects and perceived threat, this article stipulates that residing near a mass shooting should increase support for gun control by making the threat of gun violence more salient. Drawing upon multiple data sources on mass public shootings paired with large-N survey data, it demonstrates that increased proximity to a mass shooting is associated with heightened public support for stricter gun control. Importantly, the results show that this effect does not vary by partisanship, but does vary as a function of salience-related event factors, such as repetition, magnitude and recency. Critically, the core result is replicated using panel data. Together, these results suggest a process of context-driven policy feedback between existing gun laws, egregious gun violence and demand for policy change.

Although the Paris Agreement arguably made some progress, interest in supplementary approaches to climate change co-operation persist. This article examines the conditions under which a climate club might emerge and grow. Using agent-based simulations, it shows that even with less than a handful of major actors as initial members, a club can eventually reduce global emissions effectively. To succeed, a club must be initiated by the ‘right’ constellation of enthusiastic actors, offer sufficiently large incentives for reluctant countries and be reasonably unconstrained by conflicts between members over issues beyond climate change. A climate club is particularly likely to persist and grow if initiated by the United States and the European Union. The combination of club-good benefits and conditional commitments can produce broad participation under many conditions.

To what extent are new generations ‘Thatcherite’? Using British Social Attitudes data for 1985–2012 and applying age-period-cohort analysis and generalized additive models, this article investigates whether Thatcher’s Children hold more right-authoritarian political values compared to other political generations. The study further examines the extent to which the generation that came of age under New Labour – Blair’s Babies – shares these values. The findings for generation effects indicate that the later political generation is even more right-authoritarian, including with respect to attitudes to redistribution, welfare and crime. This view is supported by evidence of cohort effects. These results show that the legacy of Thatcherism for left-right and libertarian-authoritarian values is its long-term shaping of public opinion through political socialization.

A vast amount of experimental evidence suggests that get-out-the-vote encouragements delivered through door-to-door canvassing have large effects on turnout. Most of the existing studies have been conducted in the United States, and are inspiring European mobilization campaigns. This article explores the empirical question of whether the American findings are applicable to Europe. It combines existing European studies and presents two new Danish studies to show that the pooled point estimate of the effect is substantially smaller in Europe than in the United States, and finds no effects in the two Danish experiments. The article discusses why the effects seem to be different in Europe compared to the United States, and stresses the need for further experiments in Europe as there is still considerable uncertainty regarding the European effects. While one possible explanation is that differences in turnout rates explain the differences in effect sizes, the empirical analysis finds no strong relationship between turnout and effect sizes in either Europe or the United States.

Procedural fairness theory posits that the way in which authoritative decisions are made strongly impacts people’s willingness to accept them. This article challenges this claim by contending that democratic governments can achieve little in terms of acceptance of policy decisions by the procedural means at their disposal. Instead, outcome favorability is the dominant determinant of decision acceptance. The article explicates that while central parts of procedural fairness theory are true, outcome favorability is still overwhelmingly the strongest determinant of individuals’ willingness to accept authoritative decisions. It improves on previous research by locating all key variables into one causal model and testing this model using appropriate data. Findings from a large number of experiments (both vignette and field) reproduce the expected relationships from previous research and support the additional predictions.

Previous research shows that the household context is a crucial source of influence on turnout. This article sets out a relational theory of voting in which turnout is dependent on the existence of relational selective consumption benefits. The study provides empirical tests of key elements of the proposed model using household survey data from Great Britain. First, building on expressive theories of voting, it examines the extent to which shared partisan identification enhances turnout. Secondly, extending theories of voting as a social norm, it tests whether the civic norms of citizens’ families or households affect turnout over and above the social norms of the individual. In accordance with expectations of expressive theories of voting, it finds that having a shared party identification with other members of the household increases turnout. It also finds that the civic duty of other household members is important in explaining turnout, even when allowing for respondent’s civic duty.

Studies of political budget cycles in developing countries have generally sought to inform understanding of short-term fiscal dynamics, but can also offer unique insight into broader political dynamics in developing countries. This article correspondingly employs markedly improved data in order to study the impact of elections on tax collection, and draw broader lessons. It shows that while elections as a group have had no significant effect on tax collection, the subset of competitive elections has had a significant negative impact on pre-election tax collection; while this effect appears to be largest where incumbents are particularly unpopular. This provides powerful evidence that the impact of elections on political incentives in developing countries is conditioned by the existence of an electorally competitive opposition, while offering preliminary evidence that popular resistance to taxation by unpopular governments may be an important means by which taxpayers may generate pressure for improved governance.

Contextual theories of political behaviour assert that the contexts in which people live influence their political beliefs and vote choices. Most studies, however, fail to distinguish contextual influence from self-selection of individuals into areas. This article advances understanding of this controversy by tracking the left–right position and party identification of thousands of individuals over an eighteen-year period in England before and after residential moves across areas with different political orientations. There is evidence of both non-random selection into areas and assimilation of new entrants to the majority political orientation. These effects are contingent on the type of area an individual moves into and contextual effects are weak and dominated by the larger effect of self-selection into areas.

Political violence remains a pervasive feature of electoral dynamics in many countries in Sub-Saharan Africa, even where multiparty elections have become the dominant mode of regulating access to political power. With cross-national data on electoral violence in Sub-Saharan African elections between 1990 and 2010, this article develops and tests a theory that links the use of violent electoral tactics to the high stakes put in place by majoritarian electoral institutions. It is found that electoral violence is more likely in countries that employ majoritarian voting rules and elect fewer legislators from each district. Majoritarian institutions are, as predicted by theory, particularly likely to provoke violence where large ethno-political groups are excluded from power and significant economic inequalities exist.

National governments have intensified their attempts to create international institutions in various policy fields such as the environment, finance and trade. At the same time, many subnational policy makers have begun to duplicate international efforts by setting their own, stricter policies while others remain inactive or enact more lax regulation. This ‘glocalization’ of policy creates a complex and potentially costly patchwork system of regulations. To shed light on this phenomenon, this article analyzes the interaction between subnational and national governments within a game-theoretic model of international treaty negotiations. The glocalization of regulatory policy can be understood as an attempt by subnational policy makers to strategically constrain or empower national governments in international negotiations. The study finds that the shadow of international treaty formation gives rise to within-country and cross-country policy balancing dynamics that may explain some of the subnational policy polarization that is currently observable in many countries. The article specifies the conditions under which these dynamics occur, spells out empirically testable hypotheses and identifies possible theoretical extensions.

Debates about decentralization raise cultural questions of identity and economic questions of redistribution and efficiency. Therefore the preferences of statewide parties regarding decentralization are related to their positions on the economic and cultural ideological dimensions. A statistical analysis using data from thirty-one countries confirms this: parties on the economic right are more supportive of decentralization than parties on the economic left, while culturally liberal parties favour decentralization more than culturally conservative parties. However, country context – specifically the degree of regional self-rule, the extent of regional economic disparity and the ideology of regionalist parties – determines whether and how decentralization is linked to the two dimensions. These findings have implications for our understanding of the politics of decentralization by showing how ideology, rooted in a specific country context, shapes the ‘mindset’ of agents responsible for determining the territorial distribution of power.